Query rootchain block number before rootchain contracts deployment(#1742

)

command/rootchain/deploy/deploy.go

@@ -343,6 +343,16 @@ func runCommand(cmd *cobra.Command, _ []string) {
 		}
 	}
 
+	// set event tracker start blocks for rootchain contract(s) of interest
+	// the block number should be queried before deploying contracts so that no events during deployment
+	// and initialization are missed
+	blockNum, err := client.Eth().BlockNumber()
+	if err != nil {
+		outputter.SetError(fmt.Errorf("failed to query rootchain latest block number: %w", err))
+
+		return
+	}
+
 	deploymentResultInfo, err := deployContracts(outputter, client,
 		chainConfig.Params.ChainID, consensusCfg.InitialValidatorSet, cmd.Context())
 	if err != nil {
@@ -363,14 +373,6 @@ func runCommand(cmd *cobra.Command, _ []string) {
 
 	consensusCfg.Bridge = bridgeConfig
 
-	// set event tracker start blocks for rootchain contract(s) of interest
-	blockNum, err := client.Eth().BlockNumber()
-	if err != nil {
-		outputter.SetError(fmt.Errorf("failed to query rootchain latest block number: %w", err))
-
-		return
-	}
-
 	consensusCfg.Bridge.EventTrackerStartBlocks = map[types.Address]uint64{
 		deploymentResultInfo.RootchainCfg.StateSenderAddress: blockNum,
 	}